CN101203036B - Tactics coordination system and tactics coordination method - Google Patents

Abstract

The invention discloses a strategy coordination system and includes an attribution location network and an accessing network with different strategies, wherein, the attribution location network includes an attribution strategy and an accounting functioned unit; the accessing network includes an accessing location strategy and an accounting functioned unit. The invention has the advantages that a real-time or circular interaction of relevant information of the strategy is carried out through a pre-established data format between the accessing location strategy and the accounting functioned unit, and between the attribution strategy and the accounting functioned unit, and strategy control corresponded with relevant information of the strategy is executed, thus realizing a strategy coordination among networks belonging to different operation businesses and improving the reliability of roaming of users among networks belonging to different operation businesses; a strategy coordination method is also disclosed in the invention.

Description

Policy Coordination System and Policy Coordination Method

technical field

The invention relates to mobile communication technology, in particular to a policy coordination system and a policy coordination method. the

Background technique

When a mobile user leaves his home area, he can access the mobile communication network through a network entity in a different place, so as to realize related services. At this time, the mobile user is in a roaming state, and its home network and visited network may belong to the same operator, or may belong to two operators respectively. the

FIG. 1 is a schematic diagram of a mobile user roaming between networks belonging to the same operator in the prior art. As shown in Figure 1, taking the General Packet Radio Service (GPRS) system as an example, the home public land mobile network (Home Public Land Mobile Network, HPLMN) and the visited public land mobile network (Visited Public Land Mobile Network) , VPLMN) belong to the same operator, mobile users roam to VPLMN, and access through Serving GPRS Support Node (SGSN) B, SGSN-B and HPLMN Gateway GPRS Support Node (Gateway GPRS Support Node, GGSN) Direct connection enables mobile users to access the server (Service) through the GGSN of HPLMN and the public data network (Public DataNetwork, PDN) connected to HPLMN to realize related services. the

FIG. 2 is a schematic diagram of a mobile user roaming between networks of different operators in the prior art. As shown in Figure 2, taking the GPRS system as an example, HPLMN and VPLMN belong to the same operator, and there is no direct path connection between the SGSN-B of VPLMN and the GGSN of HPLMN. Make the connection. Mobile users roam to VPLMN and access through SGSN-B. SGSN-B is connected to BG-A of HPLMN through BG-B and the inter-network backbone link (Inter PLMNBackbone), and then connected to GGSN through BG-A, thus realizing Mobile users access the server to implement related services. the

If the home network and the visited network belong to the same operator, the policies in the two networks are the same, such as charging policies/rules, quality of service (Quality of Service, Qos), etc., which can trigger mobile users in the roaming state Policies control related events, such as online charging, etc. the

FIG. 3 is a schematic diagram of online charging for a roaming mobile user by a network of the same operator in the prior art. As shown in Figure 3, taking the GPRS system as an example, the SGSN-B of the VPLMN can directly communicate with the GGSN of the HPLMN. , OCS) report policy-related information A, and OCS reports the billing result B obtained after processing policy-related information A to the billing system (Billing System, BS); To report the policy-related information A', the GGSN of the HPLMN still reports the related policy-related information A to the OCS, and the OCS reports the charging result obtained after processing the policy-related information A and A' to the BS. Wherein, the SGSN-B can report the policy-related information A' to the OCS through the authentication, authentication and accounting (Authentication, Authorization, Accounting, AAA) agent set in the VPLMN and the AAA server in the HPLMN in turn. the

However, if the home network and the visited network belong to different operators, the corresponding policies in the two networks may be different, so that relevant policy control cannot be performed. Taking policy control events as online charging as an example, VPLMN and HPLMN cannot accurately calculate the number of resources, pre-allocate resources according to the policies of different operators, and reflect them in user accounts; it is impossible for VPLMN to configure and trigger policies and calculate resource allocation for VPLMN; HPLMN cannot directly collect policy-related information from VPLMN network elements, and cannot correctly reflect the operating status of both parties; user attributes may change with factors such as current account fees and access time to the network, and VPLMN and HPLMN cannot real-time based on this change. Adjust policy enforcement for roaming users. In this way, there will be inaccurate deductions during the inter-network settlement, which will increase the complexity of the later settlement work and even lead to bad debt risks. the

It can be seen that due to the different policies in the networks belonging to different operators, there is no coordination mechanism for real-time and accurate policy-related information between networks belonging to different operators, so it is impossible to implement relevant policy control based on a unified policy and realize roaming status. Under the management of mobile users, the reliability of mobile users roaming between networks belonging to different operators is not high. the

Contents of the invention

In view of this, a main purpose of the present invention is to provide a policy coordination system that can improve the reliability of mobile users roaming between networks of different operators. the

Another main purpose of the present invention is to provide a policy coordination method, which can improve the reliability of mobile users roaming between networks of different operators. the

According to the above-mentioned main purpose, the present invention provides a policy coordination system, including: a home network and a visited network with different policies, wherein the home network includes a home policy and charging functional unit, and the visited network Including access policy and charging functional unit;

The visited policy and charging functional unit sends the policy-related information of the visited network to the home policy and charging functional unit, and the home policy and charging functional unit is related to the home policy reported by the network element NE in the home network information;

According to the intersection of the home policy and the visiting policy stored by itself, the home policy and charging functional unit processes the received policy-related information of the visiting network and the home policy-related information reported by the network elements in the home network, and obtains Policy execution result. the

A policy coordination system, comprising: a home network and a visited network with different policies, wherein the home network includes a home policy and charging functional unit, and the visited network includes a visiting policy and charging functional unit;

The visiting policy and charging functional unit obtains the execution result according to the policy of the visiting network, and sends the policy execution result of the visiting network to the home policy and charging functional unit, and the home policy and charging functional unit follows the policy of the home network The policy obtains the execution result, and the home policy and charging function unit combines the policy execution result of the visited network and the policy execution result of the home network to obtain a combined policy execution result. the

According to another main purpose above, the present invention provides a kind of policy coordination method, comprises the following steps:

The visited policy and charging functional unit sends the policy-related information of the visited network to the home policy and charging functional unit, and the home policy and charging functional unit receives the policy-related information reported by the network elements in the home network;

The home policy and charging functional unit processes the received access policy related information and the home policy related information reported by the network elements in the home network to obtain the policy execution result. the

A policy coordination method, comprising the following steps:

The visiting policy and charging functional unit obtains the execution result according to the policy of the visiting network, and sends the policy execution result of the visiting network to the home policy and charging functional unit, and the home policy and charging functional unit follows the policy of the home network The policy obtains the execution result, and the home policy and charging function unit combines the policy execution result of the visited network and the policy execution result of the home network to obtain a combined policy execution result. the

It can be seen that between the visiting policy and charging functional unit and the home policy and charging functional unit, the interaction of policy-related information is carried out in real time or periodically through the preset data format, and the policy-related information corresponding to the policy is executed. Policy control, so as to realize policy coordination between networks belonging to different operators, and improve the reliability of users roaming between networks belonging to different operators. the

Moreover, the present invention can coordinate the charging strategies of different operators in real time to ensure the accuracy and real-time performance of online charging; when pre-allocating resources, it can accurately calculate the resource quantity and pre-allocate according to different operator policies; it can realize the Qos policy Coordination; user attributes can be adjusted through policy coordination, so that adjustments can be made according to changes in factors such as current account fees and network access time, and real-time coordination and processing of both operators to achieve reasonable implementation of policies for the roaming user. the

Description of drawings

FIG. 1 is a schematic diagram of a mobile user roaming between networks belonging to the same operator in the prior art. the

FIG. 2 is a schematic diagram of a mobile user roaming between networks of different operators in the prior art. the

Fig. 3 is a schematic diagram of online charging for mobile users roaming in the network of the same operator in the prior art. the

Fig. 4 is an exemplary structural diagram of a policy coordination system in an embodiment of the present invention. the

5a-5b are structural diagrams of the policy coordination system 1 in the embodiment of the present invention. the

6a-6b are structural diagrams of the policy coordination system 2 in the embodiment of the present invention. the

7a-7b are structural diagrams of the policy coordination system 3 in the embodiment of the present invention. the

Fig. 8 is a flow chart of the policy coordination method 1 in the embodiment of the present invention. the

Fig. 9 is a flow chart of the policy coordination method 2 in the embodiment of the present invention. the

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention are further described in detail below. the

The basic idea of the embodiment of the present invention is: when a mobile user roams between different operators, trigger the policy control events of the home network and the visited network, and then, the two networks coordinate the policies of the two in real time and execute corresponding policy control . the

Among them, when a mobile user accesses the system through a network element (Network Element, NE) of the visited network, it will establish a link with the home network. During the link establishment process, the policy control events of the home network and the visited network That is, the trigger function unit can be triggered by a policy control event in the network, for example, a charging trigger function unit (Charging Trigger Function, CTF) for triggering online charging. the

Fig. 4 is an exemplary structural diagram of a policy coordination system in an embodiment of the present invention. As shown in FIG. 4 , the policy coordination system in this embodiment includes: the home network and the visited network belong to different operators, that is, the related policies such as charging policies and Qos policies in the two networks are different, and the home network The network and the visited network respectively include: a home policy and charging function unit (Policy&Charging Function) and a visiting policy and charging function unit (Policy&Charging Function). the

The attribution Policy&Charging Function and the access Policy&Charging Function conduct real-time interaction of policy-related information through a preset data format, realize policy coordination, and implement policy control corresponding to policy-related information. the

Wherein, the policy-related information for real-time interaction at least includes: policy information, service data, and policy index. The specific content of the policy information includes: related information that needs to be processed by the home network and the visited network, such as AAA service information, control policy, pre-allocated resource quantity, billing policy information, Qos policy information, etc.; policy index includes: user level , policy identifier, etc. Real-time interaction can be realized based on Remote Authentication Dial In User Service (RADIUS) protocol or DIAMETER protocol. the

In the above system, the home Policy&Charging Function and the visiting Policy&Charging Function interact in real time only when coordination between the home network and the visiting network is required, for example, when the amount of pre-allocated resources needs to be reported in online charging. the

Policy&Charging Function can be realized by using various network elements or a combination of network elements, for example, AAA server, AAA agent, OCS, combination of AAA server and OCS, etc.; real-time interaction can also be realized in different specific ways, for example, attribution Policy&ChargingFunction According to the policies of the home network and the visiting network, the execution results of the visiting site Policy&Charging Function are respectively obtained, and then the execution results of the two are combined into a result acceptable to both parties, or the visiting site Policy&Charging Function only correlates the policies of the visiting site network. The information is sent to the local Policy&Charging Function, and then the local Policy&Charging Function obtains the execution result according to the combined strategy of the two networks. the

Next, taking the GPRS system as an example, the policy coordination system and policy coordination method in the present invention will be described in detail. the

This embodiment includes three types of policy coordination systems: policy coordination system 1, which uses the AAA server to implement the home Policy&Charging Function and the visiting Policy&Charging Function; the policy coordination system 2, which uses OCS to realize the home Policy&Charging Function and the visiting Policy&Charging Function; policy coordination System 3 uses the combination of AAA server and OCS to realize the attribution Policy&Charging Function, and uses the AAA server to realize the access Policy&Charging Function. These three policy coordination systems can realize the policy coordination function of the policy coordination system shown in Figure 4 through real-time interaction. The home network and the access network in the three policy coordination systems belong to different operators. The various strategies are also different. the

5a-5b are structural diagrams of the policy coordination system 1 in the embodiment of the present invention. In the policy coordination system 1 shown in Fig. 5a and Fig. 5b, both the attribution Policy&Charging Function and the access Policy&Charging Function are implemented through the AAA server, but the real-time interaction methods are different. the

In the policy coordination system 1 shown in Figure 5a, the VPLMN first executes relevant processing according to the policies in the access site policy set, and then interacts with the HPLMN in real time; in the policy coordination system 1 shown in Figure 5b, the VPLMN only conducts relevant data processing with the HPLMN Real-time interaction, HPLMN processes the relevant data according to the combined strategy of the attribution and visitation. the

As shown in Figure 5a, taking the policy control event as online charging, and the real-time interactive policy-related information including service data as an example, the policy coordination system 1 in this embodiment includes: the AAA server of the access site, the policy set of the access site, the attribution The local AAA server and the local policy set. the

A mobile user in the roaming state accesses the VPLMN through the NE in the VPLMN, and triggers a related policy control event, that is, online charging in this embodiment, and the NE in the VPLMN sends a request (Request) to the AAA server of the visited place, requesting the execution Strategy. the

The visiting site policy set and the home site policy set respectively store the preset visiting site policy and the home site policy, and provide them to the visiting site AAA server and the home site AAA server respectively. the

The AAA server of the visiting place receives the Request sent by the NE, processes the visiting place policy-related information reported by the NE in the VPLMN according to the visiting place policy provided by the visiting place policy set, and obtains the charging result of the visiting place; when policy coordination with the HPLMN is required , through the direct link with the home AAA server, carry the visited accounting result as the policy execution result in the Request and send it to the home AAA server; send the combined accounting result from the home AAA server to the NE. the

The home AAA server receives the visiting site charging result from the visiting site AAA server; processes the home policy related information reported by the NE in the HPLMN according to the home policy provided by the home policy set, and obtains the home charging result; The visiting charging result and the home charging result are combined, provided to the external BS, and carried in a response (Response) and sent to the visiting AAA server. the

If the number of pre-allocated resources is required in online charging, that is, the Request received by the visited AAA server includes the request for pre-allocated resources, then the visited AAA server calculates the home pre-allocated resource according to the home policy provided by the home policy set. The number of resources, and the number of pre-allocated resources in the access area is carried as the result of policy execution in the Request based on the RADIUS/DIAMETER protocol and sent to the home AAA server; according to the number of combined pre-allocated resources from the home AAA server, the The resources are pre-allocated, and the resource allocation results are carried in the Response and sent to the NE. the

In this case, the home AAA server receives the number of pre-allocated resources from the home AAA server; calculates the number of pre-allocated resources at the home according to the home policy provided by the home policy set and the Request from the home AAA server , combined with the number of pre-allocated resources in the visited place to obtain the combined number of pre-allocated resources; carry the combined number of pre-allocated resources in the Response and send it to the AAA server in the visited place. the

As shown in Figure 5b, taking the policy control event as online charging and the real-time interactive policy-related information including business data as an example, the policy coordination system 1 in this embodiment includes: the visited AAA server, the home AAA server and the combination Policy sets, combined policy sets are in HPLMN. the

A mobile user in the roaming state accesses the VPLMN through the NE in the VPLMN, and triggers a related policy control event, that is, online charging in this embodiment, and the NE in the VPLMN sends a Request to the visited AAA server to request policy execution. the

Combine the policy set, store the home policy and the visiting policy, and provide the intersection of the home policy and the visiting policy to the home AAA server. the

The visited AAA server receives the Request sent by the NE and the reported visiting policy-related information; when policy coordination with the HPLMN is required, the visiting policy-related information is carried in the Request through a direct link with the home AAA server Send it to the home AAA server; send the accounting result from the home AAA server to the NE. the

The home AAA server receives the visit site policy-related information from the visit site AAA server; processes the received visit site policy-related information and the information reported by the NE in the HPLMN according to the intersection of the home site policy and the visit site policy provided by the combined policy set Get the accounting result based on the information related to the home policy; provide the accounting result to the external BS, carry it in the Response and send it to the visited AAA server. the

If the amount of pre-allocated resources is required in online charging, that is, the Request received by the visited AAA server includes a request for pre-allocated resources, the visited AAA server forwards the Request to the home AAA server; Allocate the number of resources, initiate resource pre-allocation for mobile users, and send the resource allocation result to the NE in the Response. the

In this case, the home AAA server receives the Request from the visited AAA server; calculates the number of pre-allocated resources according to the intersection of the home policy and the visited policy provided by the combined policy set, and carries the calculated number of pre-allocated resources in Response is sent to the visited AAA server. the

If a mobile user triggers a Qos event, the policy coordination system 1 shown in Fig. 5a and Fig. 5b can exchange Qos policy information according to the process of pre-allocating resources respectively, so as to realize Qos policy coordination. the

The above policy coordination system 1 utilizes the AAA server to realize the policy coordination function of the Policy&Charging Function in the VPLMN and HPLMN. Next, the policy coordination system 2 in this embodiment will be described. the

6a-6b are structural diagrams of the policy coordination system 2 in the embodiment of the present invention. In the policy coordination system 2 shown in Figure 6a and Figure 6b, both the attribution Policy&Charging Function and the access Policy&Charging Function are implemented through the OCS, but the real-time interaction methods are different. the

In the policy coordination system 2 shown in Figure 6a, the VPLMN first executes relevant processing according to the policy set in the visited location, and then interacts with the HPLMN in real time; in the policy coordination system 2 shown in Figure 6b, the VPLMN only exchanges relevant data with the HPLMN Real-time interaction, HPLMN processes relevant data according to the combination strategy of the place of origin and the place of visit. the

As shown in Figure 6a, taking the policy control event as online charging and the real-time interactive policy-related information including business data as an example, the policy coordination system 2 in this embodiment includes: the visiting OCS and the home OCS, the visiting OCS The home OCS and the home OCS respectively include the visited OCF, the home OCF, the home policy set, and the visited policy set. the

A mobile user in the roaming state accesses the VPLMN through the NE in the VPLMN, and triggers a related policy control event, that is, online charging in this embodiment, and the NE in the VPLMN sends a Request to the visited OCS to request policy execution. the

The visiting site policy set and the home site policy set respectively store the preset visiting site policies and home site policies, and provide them to the online charging function unit (Online Charging Function, OCF) of the visiting site and the home site OCF respectively. the

The visiting place OCF receives the Request sent by the NE, and processes the visiting place policy-related information reported by the NE in the VPLMN according to the visiting place policy provided by the visiting place policy set; when policy coordination with the HPLMN is required, the visiting place credit control request ( CCR) data to request policy execution from the home OCF, and send the visited charging result to the home OCF through the visited CCR data; send the combined charging result from the home OCF to the NE. the

The home OCF receives the visited CCR data from the visited OCF; according to the home policy provided by the home policy set, processes the home policy related information reported by the NE in the HPLMN to obtain the home CCR data; the visited CCR data It is combined with the CCR data of the home location, provided to the external BS, and carried in the credit control response (CCA) data and sent to the OCF of the visiting location. the

If the number of pre-allocated resources is required in online charging, that is, the CCS data received by the visited OCF includes a request for pre-allocated resources, the visited OCF calculates the pre-allocated resources of the home according to the home policy provided by the home policy set Quantity, that is, the CCR data of the visited place also includes the number of pre-allocated resources of the visited place. the

In this case, the home OCF receives the number of pre-allocated resources from the visited OCF; according to the home policy provided by the home policy set and the Request from the visited OCF, calculate the number of pre-allocated resources at the home, that is, the home The CCR data also includes the number of pre-allocated resources at the home location, combined with the number of pre-allocated resources at the visited location, to obtain the combined pre-allocated resource quantity; carry the combined pre-allocated resource quantity in the CCA data and send it to the visited OCF. the

As shown in Figure 6b, taking policy control events as online charging and real-time interactive policy-related information including business data as an example, the policy coordination system 2 in this embodiment includes: visiting OCS, home OCS, home OCS Including the attribution OCF and the combined policy set. the

A mobile user in the roaming state accesses the VPLMN through the NE in the VPLMN, and triggers a related policy control event, that is, online charging in this embodiment, and the NE in the VPLMN sends a Request to the visited OCS to request policy execution. the

Combining the policy set, storing the home policy and the visiting policy, and providing the intersection of the home policy and the visiting policy to the home OCF. the

The visiting site OCF receives the request sent by the NE, and processes the visiting site policy-related information reported by the NE in the VPLMN according to the visiting site policy provided by the visiting site policy set; The home OCF requests policy execution, and sends policy-related information of the visited place to the home OCF through the visited CCR data; sends the charging result from the home OCF to the NE. the

The home OCF receives the policy-related information of the visiting site from the visiting site OCF; processes the received policy-related information of the visiting site and the home site reported by the NE in the HPLMN according to the intersection of the home policy and the visiting site policy provided by the combined policy set The policy-related information is obtained to obtain the charging result; the charging result is provided to the external BS, and is carried in the CCA data and sent to the visiting OCF. the

If the amount of pre-allocated resources is required in online charging, that is, the Request received by the visiting OCF includes a request for pre-allocated resources, the visiting OCF requests the home OCF to pre-allocate resources through the CCR data; according to the pre-allocation from the home OCF Resource quantity, initiates resource pre-allocation for mobile users, and sends the resource allocation result to the NE in the Response. the

In this case, the home OCF receives the CCR data from the visited AAA server; calculates the number of pre-allocated resources according to the intersection of the home policy and the visited policy provided by the combined policy set, and carries the calculated number of pre-allocated resources with Send it to the visiting OCF in the CCA data. the

Since the OCS is usually only used for charging, the policy coordination system in this embodiment does not support Qos policy coordination. the

The policy coordination system 2 mentioned above realizes the policy coordination function of the Policy & Charging Function in the VPLMN and HPLMN by using the OCS, and the policy coordination system 3 in this embodiment will be described below. the

7a-7b are structural diagrams of the policy coordination system 3 in the embodiment of the present invention. In the policy coordination system 3 shown in Fig. 7a and Fig. 7b, the attribution Policy&Charging Function is implemented through the combination of the AAA server and OCS, and the access Policy&Charging Function is implemented through the AAA server, but the real-time interaction methods are different. the

In the policy coordination system 3 shown in Figure 7a, the VPLMN first executes relevant processing according to the policy set in the visited location, and then interacts with the HPLMN in real time; in the policy coordination system 3 shown in Figure 7b, the VPLMN only exchanges relevant data with the HPLMN Real-time interaction, HPLMN processes relevant data according to the combination strategy of the place of origin and the place of visit. the

As shown in Figure 7a, taking the policy control event as online charging, and real-time interactive policy-related information including service data as an example, the policy coordination system 3 in this embodiment includes: the AAA server of the access site, the policy set of the access site, and the attribution The home AAA server and the home OCS, the home OCS further includes: the home OCF and the home policy set. the

A mobile user in the roaming state accesses the VPLMN through the NE in the VPLMN, and triggers a related policy control event, that is, online charging in this embodiment, and the NE in the VPLMN sends a Request to the visited AAA server to request policy execution. the

The visiting site policy set and the home site policy set respectively store the preset visiting site policies and home site policies, and provide them to the visiting site AAA server and the home site OCF respectively. the

The AAA server of the visiting place receives the Request sent by the NE, processes the visiting place policy-related information reported by the NE in the VPLMN according to the visiting place policy provided by the visiting place policy set, and obtains the charging result of the visiting place; when policy coordination with the HPLMN is required , through the direct link with the home AAA server, carry the visited accounting result as the policy execution result in the Request and send it to the home AAA server; send the combined accounting result from the home AAA server to the NE. the

The home AAA server receives the visiting local charging result from the visiting local AAA server; sends the visiting local charging result and the home policy-related information reported by the NE in the HPLMN to the home OCF through the home CCR data; The combined charging result of the local OCF is carried in the Response and sent to the visited AAA server. the

The home OCF processes the home policy related information according to the home policy provided by the home policy set, and obtains the home charging result; combines the access charging result and the home charging result, provides it to the external BS, and carries Send it to the home AAA server in the CCA data. the

If the number of pre-allocated resources is required in online charging, that is, the Request received by the visited AAA server includes the request for pre-allocated resources, then the visited AAA server calculates the home pre-allocated resource based on the home policy provided by the home policy set. resources, and send the number of pre-allocated resources to the home AAA server as the result of policy execution in the Request based on the RADIUS/DIAMETER protocol; The resources are pre-allocated, and the resource allocation results are carried in the Response and sent to the NE. the

In this case, the home AAA server receives the number of pre-allocated resources from the home AAA server; requests the home OCF to pre-allocate resources through the home CCR data, and sends the number of pre-allocated resources of the home and the number of pre-allocated resources of the home Relevant information is sent to the home OCF; the combined pre-allocated resource quantity from the home OCF is carried in the Response and sent to the visited AAA server. the

The home OCF receives the home CCR data from the home AAA server; calculates the number of home pre-allocated resources according to the home strategy provided by the home policy set and the home pre-allocated resource information from the home AAA server, Combined with the number of pre-allocated resources in the visited area, the combined number of pre-allocated resources is obtained; the combined number of pre-allocated resources is sent to the AAA server at the home location through the CCA data. the

As shown in Figure 7b, taking the policy control event as online charging and the real-time interactive policy-related information including business data as an example, the policy coordination system 3 in this embodiment includes: the visited AAA server, the home AAA server, and the home The local OCS, the home OCS further includes: the home OCF and the combined policy set. the

A mobile user in the roaming state accesses the VPLMN through the NE in the VPLMN, and triggers a related policy control event, that is, online charging in this embodiment, and the NE in the VPLMN sends a Request to the visited AAA server to request policy execution. the

The visiting site policy set and the home site policy set respectively store the preset visiting site policies and home site policies, and provide them to the visiting site AAA server and the home site OCF respectively. the

The AAA server of the visiting place receives the Request sent by the NE, processes the visiting place policy-related information reported by the NE in the VPLMN according to the visiting place policy provided by the visiting place policy set, and obtains the charging result of the visiting place; when policy coordination with the HPLMN is required At this time, through the direct link with the home AAA server, carry policy-related information of the visit site in the Request and send it to the home AAA server; send the accounting result from the home AAA server to the NE. the

The home AAA server receives the visiting policy-related information from the visiting AAA server; sends the visiting policy-related information and the home policy-related information reported by the NE in the HPLMN to the home OCF through the home CCR data; The accounting result of the local OCF is carried in the Response and sent to the visited AAA server. the

The home OCF, according to the home policy provided by the home policy set, processes the home policy-related information and the access policy-related information, and obtains the charging result; provides the charging result to the external BS, and carries it in the CCA data and sends it to the home local AAA server. the

If the amount of pre-allocated resources is required in online charging, that is, the Request received by the visited AAA server includes a request for pre-allocated resources, the visited AAA server forwards the Request to the home AAA server; Allocate the amount of resources, initiate resource pre-allocation to mobile users, and send the resource allocation result to the NE in the Response. the

In this case, the home AAA server receives the Request from the visited AAA server; requests the home OCF to pre-allocate resources through the home CCR data, and sends information about the home pre-allocated resources to the home OCF; The combined pre-allocated resource quantity of the OCF is carried in the Response and sent to the visited AAA server. the

The home OCF receives the home CCR data from the home AAA server; calculates the number of pre-allocated resources at the home according to the intersection of the home policy and the access policy provided by the combined policy set, and passes the obtained pre-allocated resources through The CCA data is sent to the home AAA server. the

In the three policy coordination systems of this embodiment, both Request and Response can be information based on the RADIUS/DIAMETER protocol; the AAA server can also be used for user authentication and authentication; the visited AAA server can also be replaced by the home network operator The AAA proxy set by the provider in the visited network; the AAA servers at the visited and home can also be replaced by functional units such as Policy & Charging Rule Function (PCRF) that can implement policy negotiation. the

Each policy set in the above system can be implemented by any kind of storage device or server, and can also be a storage device inside other units in the system. the

In order to save transmission resources, in the policy coordination process of the attribution Policy&Charging Function and the access Policy&Charging Function, a corresponding policy index such as a policy classification identifier can also be used to replace a large amount of policy information. the

In the above three policy coordination systems, when pre-allocation of resources is required, factors affecting pre-allocation of resources include at least:

VPLMN's access rate, user level, session priority, service quality requirements, and current user status; VPLMN requires the upper and lower limits of pre-allocated resources, update intervals, allocation units, and allocation objects. the

In the policy coordination system shown in Figure 5a, Figure 6a, and Figure 7a, the policies of the two networks are stored in the home network at the same time, and policy coordination is performed according to the policy intersection of the two networks. Therefore, if the visited network After the policy in is adjusted, the policy intersection also needs to be adjusted. The intersection of the home policy and the visiting policy can also be updated in the following way: the information can be automatically updated by the regular communication between the home network and the visiting network according to the AAA server, that is, the visiting AAA server will update the visiting site The policy is sent to the combined policy set by the home AAA server, and then reassembled; it can also be updated regularly using other protocols or tools, such as File Transfer Protocol (File Transfer Protocol, FTP), etc.; it can also be negotiated by the operators of the two networks , loaded directly into the combined strategy set. the

In this way, the policy coordination system shown in Figure 5, Figure 6 and Figure 7 in this embodiment can coordinate the charging policies of different operators in real time, thereby ensuring the accuracy and real-time performance of online charging; , which can accurately calculate the resource quantity and pre-allocate according to different operator strategies. Moreover, through real-time interaction strategies between the home network and the visiting network, user attributes can be adjusted, such as rate cycle, preferential period, user level, etc., so that adjustments can be made according to changes in current account fees, access time to the network, and other factors , to coordinate and process both operators in real time, so as to implement the policy reasonably for the roaming user. the

The above is the detailed description of the policy coordination system in this embodiment, and the policy coordination method in this embodiment will be described below. the

The policy coordination method in this embodiment includes: Policy coordination method 1, the visiting site Policy&Charging Function only sends policy-related information of the visiting site network to the home policy&Charging Function, and then the home Policy&Charging Function obtains and executes it according to the combined policy of the two networks Result; in policy coordination method 2, the home Policy&Charging Function and the visiting Policy&Charging Function respectively obtain the execution results according to the policies of the home network and the visiting network, and then combine the execution results of the two into a result acceptable to both parties. the

Fig. 8 is a flow chart of the policy coordination method 1 in the embodiment of the present invention. As shown in Figure 8, taking policy control events as online charging, real-time interactive policy-related information includes business data as an example, the policy coordination method 1 in this embodiment includes the following steps:

In step 801, a user in a roaming state accesses from a VPLMN, and triggers a policy control event of the visited network and the home network, that is, online charging. the

In step 802, the NE in the visited network requests policy execution from the visited Policy&Charging Function, and reports related information about the visited policy; the NE in the home network reports home policy-related information to the home Policy&Charging Function. the

In step 803, the visited policy&Charging Function carries the visited policy related information in the policy execution request sent by the visited NE, and sends it to the home Policy&ChargingFunction. the

Step 804, the attribution policy&charging function processes the information related to the access policy and the information related to the attribution policy according to the stored intersection of the access policy and the attribution policy, and obtains the charging result. the

In step 805, the Policy&Charging Function of the home location feeds back the charging result to the Policy&Charging Function of the visiting location. the

So far, this process ends. the

In the above-mentioned policy coordination method 1, the home network charges uniformly according to the combined policy; while in the policy coordination method 2, the visiting network and the home network charge for the mobile user's access and roaming respectively. the

Fig. 9 is a flow chart of the policy coordination method 2 in the embodiment of the present invention. As shown in Figure 9, taking policy control events as online charging and real-time interactive policy-related information including business data as an example, the policy coordination method 2 in this embodiment includes the following steps:

In step 901, a user in a roaming state accesses from a VPLMN, and triggers a policy control event of the visited network and the home network, that is, online charging. the

In step 902, the NE in the visited network requests policy execution from the visited Policy&Charging Function, and reports related information of the visited policy; the NE in the home network reports home policy-related information to the home Policy&Charging Function. the

In step 903, the visiting place Policy & Charging Function processes the visiting place policy related information according to the visiting place policy stored by itself, and obtains the visiting place charging result. the

In step 904, the visited Policy&Charging Function carries the visited charging result in the policy enforcement request sent by the visited NE, and sends it to the home Policy&ChargingFunction. the

Step 905, the attribution policy&charging function processes the access policy-related information and the attribution policy-related information according to the attribution policy stored by itself, obtains the attribution charging result, and compares the attribution charging result with the received access location charging result Combine the results. the

Step 906, the home Policy&Charging Function feeds back the combined charging result to the visiting Policy&Charging Function. the

So far, this process ends. the

In the two policy coordination methods in this embodiment, pre-resource allocation, Qos policy coordination, and policy interaction between the home site and the access site can also be performed through the above process. the

The above descriptions are only preferred implementation modes of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the embodiments of the present invention shall be included within the protection scope of the present invention. the

Claims (17)

1. A policy coordination system, comprising: a home network and a visiting network with different policies, wherein the home network includes a home policy and charging function unit, and the visiting network includes a visiting policy and charging function unit; characterized in that, The visited policy and charging functional unit sends the policy-related information of the visited network to the home policy and charging functional unit, and the home policy and charging functional unit is related to the home policy reported by the network element NE in the home network information; According to the intersection of the home policy and the visiting policy stored by itself, the home policy and charging functional unit processes the received policy-related information of the visiting network and the home policy-related information reported by the network elements in the home network, and obtains Policy execution result. 2. The system according to claim 1, wherein the visited site policy and charging functional unit receives the NE sent by the visited site network after the roaming mobile user accesses and triggers a policy control event. The policy enforcement request and the reported policy-related information of the visiting site; carry the policy-related information of the visiting site in the policy enforcement request and send it to the policy and charging functional unit of the home site; The home policy and charging functional unit receives the policy-related information of the visiting site from the visiting site policy and charging functional unit. 3. The system according to claim 2, characterized in that, the access site policy and accounting functional unit comprises: access site authentication/authentication/billing AAA server; The home policy and charging functional unit includes: a home AAA server and a combined policy set; The visited site AAA server receives the policy execution request sent by the NE in the visited site network and the reported site policy related information; through the direct link with the home site AAA server, carries the visited site policy related information in the policy Send to the home AAA server in the execution request; The combined policy set stores the home policy and the visiting policy, and provides the intersection of the home policy and the visiting policy to the home AAA server; The home AAA server receives the visiting site policy-related information from the visiting site AAA server; according to the intersection of the home site policy and the visiting site policy provided by the combined policy set, processes the received visiting site policy-related information and the The policy-related information reported by the NE to obtain the policy execution result. 4. The system according to claim 2, wherein the visited policy and charging function unit comprises: the visited online charging system OCS, and the visited OCS includes the visited online charging function unit OCF; The home policy and charging functional unit includes: home OCS, home OCS includes home OCF and combined policy set; The visited OCF receives the policy enforcement request sent by the NE in the visited network and the reported visited policy-related information; requests the home OCF to implement the policy through the visited credit control request CCR data, and sends the visited policy-related information Send to the home OCF through the visited CCR data; The combined policy set stores the home policy and the visiting policy, and provides the intersection of the home policy and the visiting policy to the home OCF; The home OCF receives the visiting site policy-related information from the visiting site OCF; according to the intersection of the home site policy and the visiting site policy provided by the combined policy set, processes the received visiting site policy-related information and the NE in the home network The reported policy-related information is used to obtain the policy execution results. 5. The system according to claim 2, characterized in that, the policy and charging functional unit of the visit site comprises: a visit site AAA server; The home policy and charging functional unit includes: a home AAA server and a home OCS, and the home OCS includes a home OCF and a combined policy set; The visited site AAA server receives the policy execution request sent by the NE in the visited site network and the reported site policy related information; through the direct link with the home site AAA server, carries the visited site policy related information in the policy Send to the home AAA server in the execution request; The combined policy set stores the home policy and the visiting policy, and provides the intersection of the home policy and the visiting policy to the home OCF; The home AAA server receives the visiting policy-related information from the visiting AAA server; sends the visiting policy-related information and the home policy-related information reported by the NE in the home network to the home OCF through the home CCR data ; The home OCF receives the visiting policy-related information and the home policy-related information from the home AAA server; processes the received visiting policy-related information according to the intersection of the home policy and the visiting policy provided by the combined policy set Based on the policy-related information reported by the NE in the home network, the policy execution result is obtained. 6. A policy coordination system, comprising: a home network and a visiting network with different policies, wherein the home network includes a home policy and charging function unit, and the visiting network includes a visiting policy and charging function unit; characterized in that, The visiting policy and charging functional unit obtains the execution result according to the policy of the visiting network, and sends the policy execution result of the visiting network to the home policy and charging functional unit, and the home policy and charging functional unit follows the policy of the home network The policy obtains the execution result, and the home policy and charging function unit combines the policy execution result of the visited network and the policy execution result of the home network to obtain a combined policy execution result. 7. The system according to claim 6, wherein the visited site policy and charging functional unit receives the network element NE in the visited network after the mobile user in the roaming state accesses and triggers a policy control event The policy execution request sent and the relevant information of the access site policy reported; according to the access site policy stored by itself, the access site policy related information is processed to obtain the access site policy execution result; the access site policy execution result is carried in the policy execution request and sent to Attribution policy and charging functional unit; The home policy and charging functional unit receives the visiting site policy execution result from the visiting site policy and charging functional unit; according to the home policy stored by itself, processes the home policy related information reported by the NE in the home network , to obtain the execution result of the attribution policy; combine the execution result of the attribution policy and the execution result of the access policy to obtain the execution result of the combined policy. 8. The system according to claim 6, wherein the access policy and charging functional unit comprises: an access AAA server and an access policy set; The home policy and charging functional unit includes: a home AAA server and a home policy set; The visiting policy set and the home policy set respectively store the preset visiting policy and home policy, and provide them to the visiting AAA server and the home AAA server respectively; The visited AAA server receives the policy execution request sent by the NE in the visited network, processes the related information of the visited policy according to the visited policy provided by the visited policy set, and obtains the execution result of the visited policy; The direct link between them carries the policy enforcement result of the visited site in the policy enforcement request and sends it to the home AAA server; The home AAA server receives the visiting policy result from the visiting AAA server; processes the home policy related information reported by the NE in the home network according to the home policy provided by the home policy set, and obtains the home policy execution Result; combining the execution result of the access policy and the execution result of the attribution policy to obtain the combined policy execution result. 9. The system according to claim 6, characterized in that, the visiting site policy and charging functional unit comprises: visiting site online charging system OCS, and visiting site OCS includes visiting site OCF and visiting site policy set; The home policy and charging functional unit includes: home OCS, home OCS includes home OCF and home policy set; The visited policy set and the home policy set respectively store the preset visiting policy and the home policy, and provide them to the visiting OCF and the home OCF respectively; The visiting site OCF receives the policy enforcement request sent by the NE in the visiting site network and the reported visiting site policy related information; processes the visiting site policy related information according to the visiting site policy set provided by the visiting site policy set; Request the CCR data to request the execution policy from the home OCF, and send the policy execution result of the visit place to the home OCF through the visit CCR data; The home OCF receives the visiting policy execution result from the visiting OCF; according to the home policy provided by the home policy set, processes the policy-related information reported by the NE in the home network to obtain the home policy execution result; combining The execution result of the access policy and the execution result of the home policy are obtained to obtain the execution result of the combined policy. 10. The system according to claim 6, wherein the access policy and charging functional unit comprises: an access AAA server and an access policy set; The home policy and charging functional unit includes: a home AAA server and a home OCS, and the home OCS includes a home OCF and a home policy set; The visiting policy set and the home policy set respectively store the preset visiting policy and home policy, and provide them to the visiting AAA server and the home OCF respectively; The visited AAA server receives the policy execution request sent by the NE in the visited network, processes the related information of the visited policy according to the visited policy provided by the visited policy set, and obtains the execution result of the visited policy; The direct link between them carries the policy enforcement result of the visited site in the policy enforcement request and sends it to the home AAA server; The home AAA server receives the visit site policy execution result from the visit site AAA server; sends the visit site policy execution result and home policy related information reported by the NE in the home network to the home OCF through the home CCR data ; The home OCF receives the access site policy execution result and home policy related information from the home AAA server; processes the received home policy related information according to the home policy set provided by the home policy set, and obtains the home policy Execution result; combining the execution result of the access policy and the execution result of the attribution policy to obtain the combined policy execution result. 11. The system according to claim 7, wherein the home policy and charging functional unit further sends the obtained home policy execution result or combined policy execution result to the visiting policy execution result through a policy execution response with billing functional unit. 12. The system according to claim 6, wherein the policy related information comprises: policy information, service data and policy index. 13. A policy coordination method, characterized in that, comprising the following steps: The visited policy and charging functional unit sends the policy related information of the visited network to the home policy and charging functional unit, and the home policy and charging functional unit receives the policy related information reported by the network elements in the home network; The home policy and charging functional unit processes the received visiting policy related information and the home policy related information reported by the network elements in the home network, and obtains the policy execution result. 14. The method according to claim 13, characterized in that, the method specifically comprises: The visiting site policy and charging function unit receives the policy enforcement request sent by the NE in the visiting site network and the reported visiting site policy related information; carries the visiting site policy related information in the policy enforcement request and sends it to the home site policy and charging function unit; The attribution policy and charging functional unit receives the access policy-related information from the access policy and accounting function unit; processes the received access policy-related information and attribution according to the intersection of the attribution policy and the access policy stored by itself. The information related to the local policy reported by the NE in the local network is obtained to obtain the policy execution result. 15. A policy coordination method, characterized in that, comprising the following steps: The visiting policy and charging functional unit obtains the execution result according to the policy of the visiting network, and sends the policy execution result of the visiting network to the home policy and charging functional unit, and the home policy and charging functional unit follows the policy of the home network The policy obtains the execution result, and the home policy and charging function unit combines the policy execution result of the visited network and the policy execution result of the home network to obtain a combined policy execution result. 16. The method according to claim 15, characterized in that, the method is specifically: After a roaming mobile user accesses and triggers a policy control event, the visited site policy and charging function unit receives the policy enforcement request sent by the NE in the visited network and the reported policy-related information of the visited site; The policy, processing the information related to the access policy, and obtaining the execution result of the access policy; carrying the execution result of the access policy in the policy execution request and sending it to the home policy and charging functional unit; The home policy and charging functional unit receives the visiting site policy execution result from the visiting site policy and charging functional unit; processes the home policy related information reported by the NE in the home network according to the home policy stored by itself, and obtains the home policy The execution result of the local policy; the execution result of the attribution policy and the execution result of the access policy are combined to obtain the combined policy execution result. 17. The method according to claim 15, characterized in that, after the home policy and charging functional unit obtains the policy execution result of the visited network and the policy execution result of the home network or the combined policy execution result, the method Further includes: The home policy and charging function unit further sends the obtained policy execution result of the visited network and the policy execution result of the home network or the combined policy execution result to the visited policy and charging function unit through a policy enforcement response.

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